Concrete-arch reinforcement.



. G. A. P. TURNER. CONCRETE ARCH REINFORCEMENT.

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Specification of Letters Patent. I PatentQdAug. 6, 1912.

Application filed June 18, 1909. Serial'No. 502.973.

To all whom it may concern:

Be it known thatl, CLAUDE A. P. TURNER, of Minneapolis, in the county ofHennepin and in the State of Minnesota, have invented a certain new anduseful Improvement in Concrete-Arch Reinforcements, and

do hereby declare that the following is a full, clear, and exactdescription thereof.

,My-invention relates to the reinforcement of concrete. arches of theMonier type of double reinforcement where the lines or planes of the twosets of reinforcing rods or bars are so separated as to make the matterofholding them in position while the concrete is being poured, adiiiicult one, and my object is .eficiently and economically to do thiswork.

To this end my invention consists in the arch reinforcementsubstantially as hereinafter specified and claimed.

In the drawings, Figure 1 is a side elevation of a fragment of an archembodying my invention;.Fig. 2 a topplan view of a.

portion thereof; rig. 3 a detail-view in perspective'ot a portionthereof; Fig. 4 a detail view in top plan showing the connection betweenthe angle bar and the reinforcing rods or bars; Fig. 5 a detail Viewinside elevation of the same.

Referring to thedrawings, and 11, respectively, designate two lines orgroups of longitudinally and transversely extending bars arranged,respectively, near the intrados and the extrados of the arch. Situatedat the angles oi the intersection of the longitudinal and transversebars of the lines or groups and perpendicular thereto, are radiallyextending angle bars 12, to which the bars are suitably attached, andwhich thereby tie or hold the two groups together as a rigid framework,resting on the falsework on which the concrete is placed. -One flange ofan angle bar 12 has secured to it the longitudinally extending bars 10and the other flange has attached to it the transversely extending bars11. The said flanges are punched or otherwise provided with holes forstaples or U-bolts 14 by which the bars 10 and 11 are fastened thereto.Pref erably the angle bars are placed in-staggered order.

.What I claim is i 1. In a reinforced concrete construction, thecombination of separatedgr'oups of reintorcing bars the bars of eachgroup ex tending in intersecting lines,- the .two groups being situatedto extend through the mass or body of concrete toward the opposite sidesthereof, angle bars running'from the angles of intersection of thebars'of one group across to the second group at the corresponding anglesformed by the bars of said second group, the bars of a group in onedirection being against one web of said angle bars, and the bars pfagroup in the other direction being at the other web of said angle bars,and means securely attaching the groups of reinforcing bars to the websof said angle bars.

2. In a reinforced concrete construction, the combination of separatedgroups of reinforcing bars the barsof each group extending inintersecting lines, the two groups being situated to extend through themass m or body of concrete toward the opposite sides thereof, angle barsrunning from the angles of intersection of-the bars of one groupacrossto the second group at the corresponding angles formed by the bars ofsaid second group, the bars of a group in one direction being againstone web of said angle bars, and the barsof a group in the otherdirection being at the other web of said angle bars,- and staplessecuring said groups of bars to the webs of the angle bars.

. In testimony that I claim the: foregoing I have hereunto set my hand.

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. =0 tepiee oi this patent may be attained for five cents each, n;aaeressing the Commissioner of rate'ntc.

Washington, 3. 0;

